This is a SDL engine done by Timeslip, author of sfall.
Even if it were working perfectly, there's still little of use here; fallout already runs pretty well via wine if you really want to play on linux. That being the case, the next step will be trying to get it working somewhere other than x86. I can't give a timeline for that, because I've no idea how long it'll take, or even if I'll get bored and wander off before finishing. (I did manage to break with tradition and meet my release target for this one though, even if I did only give it 3 days ago. Razz) Also, I'm mostly working on this for fun rather than trying to get something perfect out, so even if I do get it 'working' someplace exotic don't hold your breath for it being any better than qemu.
http://www.nma-fallout.com/forum/viewtopic.php?t=58499&sid=e62af2d1fb090a7fdc86f37b22ab4bb2